<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="icon" href="./img/tx1.jpg" type="image/x-icon">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.min.css">
    <style>
        body {
            display: flex;
            height: 100vh;
            justify-content: center;
            align-items: center;
            background: #161d27;
        }
        
        .wrapper {
            width: auto;
            height: auto;
        }
        
        ul {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            -webkit-animation: rot 16s linear infinite;
            animation: rot 16s linear infinite;
        }
        
        @-webkit-keyframes rot {
            100% {
                transform: rotate(360deg);
            }
        }
        
        @keyframes rot {
            100% {
                transform: rotate(360deg);
            }
        }
        
        li {
            width: 40px;
            height: 40px;
            background: #651FFF;
            border-radius: 4px;
            box-shadow: 0 0 1px #fff, 0 0 5px #651FFF, 0 0 10px #651FFF, 0 0 15px #651FFF, 0 0 25px #651FFF, 0 0 55px #651FFF;
            -webkit-animation: scale 0.8s linear alternate infinite;
            animation: scale 0.8s linear alternate infinite;
        }
        
        @-webkit-keyframes scale {
            100% {
                transform: scale(0.1);
                opacity: 0;
            }
        }
        
        @keyframes scale {
            100% {
                transform: scale(0.1);
                opacity: 0;
            }
        }
        
        li:nth-child(1) {
            z-index: 24;
        }
        
        li:nth-child(2) {
            z-index: 23;
        }
        
        li:nth-child(3) {
            z-index: 22;
        }
        
        li:nth-child(4) {
            z-index: 21;
        }
        
        li:nth-child(5) {
            z-index: 20;
        }
        
        li:nth-child(6) {
            z-index: 19;
        }
        
        li:nth-child(7) {
            z-index: 18;
        }
        
        li:nth-child(8) {
            z-index: 17;
        }
        
        li:nth-child(9) {
            z-index: 16;
        }
        
        li:nth-child(10) {
            z-index: 15;
        }
        
        li:nth-child(11) {
            z-index: 14;
        }
        
        li:nth-child(12) {
            z-index: 13;
        }
        
        li:nth-child(13) {
            z-index: 12;
        }
        
        li:nth-child(14) {
            z-index: 11;
        }
        
        li:nth-child(15) {
            z-index: 10;
        }
        
        li:nth-child(16) {
            z-index: 9;
        }
        
        li:nth-child(17) {
            z-index: 8;
        }
        
        li:nth-child(18) {
            z-index: 7;
        }
        
        li:nth-child(19) {
            z-index: 6;
        }
        
        li:nth-child(20) {
            z-index: 5;
        }
        
        li:nth-child(21) {
            z-index: 4;
        }
        
        li:nth-child(22) {
            z-index: 3;
        }
        
        li:nth-child(23) {
            z-index: 2;
        }
        
        li:nth-child(24) {
            z-index: 1;
        }
        
        li:nth-child(25) {
            z-index: 0;
        }
        
        li:nth-child(1) {
            -webkit-animation-delay: 0.1s;
            animation-delay: 0.1s;
        }
        
        li:nth-child(7) {
            -webkit-animation-delay: 0.3s;
            animation-delay: 0.3s;
        }
        
        li:nth-child(13) {
            -webkit-animation-delay: 0.5s;
            animation-delay: 0.5s;
        }
        
        li:nth-child(19) {
            -webkit-animation-delay: 0.7s;
            animation-delay: 0.7s;
        }
        
        li:nth-child(24) {
            -webkit-animation-delay: 0.9s;
            animation-delay: 0.9s;
        }
        
        li:nth-child(2) {
            -webkit-animation-delay: 0.2s;
            animation-delay: 0.2s;
        }
        
        li:nth-child(8) {
            -webkit-animation-delay: 0.4s;
            animation-delay: 0.4s;
        }
        
        li:nth-child(14) {
            -webkit-animation-delay: 0.6s;
            animation-delay: 0.6s;
        }
        
        li:nth-child(20) {
            -webkit-animation-delay: 0.8s;
            animation-delay: 0.8s;
        }
        
        li:nth-child(3) {
            -webkit-animation-delay: 0.3s;
            animation-delay: 0.3s;
        }
        
        li:nth-child(9) {
            -webkit-animation-delay: 0.5s;
            animation-delay: 0.5s;
        }
        
        li:nth-child(15) {
            -webkit-animation-delay: 0.7s;
            animation-delay: 0.7s;
        }
        
        li:nth-child(4) {
            -webkit-animation-delay: 0.4s;
            animation-delay: 0.4s;
        }
        
        li:nth-child(10) {
            -webkit-animation-delay: 0.6s;
            animation-delay: 0.6s;
        }
        
        li:nth-child(5) {
            -webkit-animation-delay: 0.5s;
            animation-delay: 0.5s;
        }
        
        li:nth-child(1) {
            -webkit-animation-delay: 0.1s;
            animation-delay: 0.1s;
        }
        
        li:nth-child(6) {
            -webkit-animation-delay: 0.2s;
            animation-delay: 0.2s;
        }
        
        li:nth-child(11) {
            -webkit-animation-delay: 0.3s;
            animation-delay: 0.3s;
        }
        
        li:nth-child(16) {
            -webkit-animation-delay: 0.4s;
            animation-delay: 0.4s;
        }
        
        li:nth-child(21) {
            -webkit-animation-delay: 0.5s;
            animation-delay: 0.5s;
        }
        
        li:nth-child(7) {
            -webkit-animation-delay: 0.3s;
            animation-delay: 0.3s;
        }
        
        li:nth-child(12) {
            -webkit-animation-delay: 0.4s;
            animation-delay: 0.4s;
        }
        
        li:nth-child(17) {
            -webkit-animation-delay: 0.5s;
            animation-delay: 0.5s;
        }
        
        li:nth-child(22) {
            -webkit-animation-delay: 0.6s;
            animation-delay: 0.6s;
        }
        
        li:nth-child(13) {
            -webkit-animation-delay: 0.5s;
            animation-delay: 0.5s;
        }
        
        li:nth-child(18) {
            -webkit-animation-delay: 0.6s;
            animation-delay: 0.6s;
        }
        
        li:nth-child(23) {
            -webkit-animation-delay: 0.7s;
            animation-delay: 0.7s;
        }
        
        li:nth-child(19) {
            -webkit-animation-delay: 0.7s;
            animation-delay: 0.7s;
        }
        
        li:nth-child(24) {
            -webkit-animation-delay: 0.8s;
            animation-delay: 0.8s;
        }
        
        li:nth-child(25) {
            -webkit-animation-delay: 0.9s;
            animation-delay: 0.9s;
        }
    </style>
    <title>知否</title>
</head>

<body>
    <div class="wrapper">
        <ul>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
        </ul>
    </div>
</body>
<script>
    window.onload = function() {
        let timer = 5;
        setInterval(() => {
            timer--;
            if (timer == 0) {
                location.href = 'front.html'
            }
        }, 500);
    }
</script>

</html>